Incredicharge I-8800 External Battery Power Bank 8800 mAh Capacity Dual USB Output (Includes AC Adapter) Backup Battery Charger For iPhone 4 4S, iPod, iPad 2 Samsung Galaxy Note S2 S3 SIII , Nexus S, HTC Sensation EVO Thunderbolt, LG Optimus V, Blackberry (Bold curve Torch), Motorola Droid Razr Maxx & Bionic, & Also Compatible with All Other Cell Phones & Tablets